body,p,div,a {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a {
    text-decoration: none;
}
body {
    background-color: skyblue;
}
.header{
    width: 100%;
    height: 58px;
    background-color: skyblue;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 3;
}
.headercontent{
    width: 1200px;
    height: 58px;
    background-color: rgb(237, 243, 245);
    margin: auto;
}
.headercontent p{
    float: left;
    top: 10px;
    font-size: 38px;
    color: skyblue;
    margin-left: 10px;
    
}
.nav{
    float: right;
    height: 58px;
    line-height: 58px;
}
.nav a{
    color: rgb(181, 6, 250);
    margin-left: 40px;
    font-size: 22px;
}
.section{
    font-size: 18px;
    color: black;
}
.title-box{
    width: 100%;
    position: absolute;
    background-color: hsl(184, 100%, 50%);
    top: 150px;
}
.title-box p{
    text-align: center;
    font-size: 60PX;
    margin: bottom 5px;

}
.title-box a {
    display: block;
    width: 300px;
    height: 30px;
    margin: auto;
}
.num1{
    margin-top: 5px;
    position: relative;
    padding-left: 0px;
    padding-top: 1px;
    
}
.tu1{
    margin-top: 75px;
    margin-left: 0px;
}
.tu1 a{
    display:block;
}
.remenxiangmu{
    
    background-color:skyblue;
    position: relative;
}


.num1tu{
    margin-bottom: 10px;
    position: absolute;
}
.num1tu img{
    width: 600px;
    height: 300px;
}
.section3 beijing{
    align-content: start;
}
.s3{
    background-color: skyblue;
    position:absolute;
    top: 50px;

    margin-top: 10px;

}
.s3 a{
    color: rgb(181, 6, 250);
    margin-left: 4px;
    font-size: 22px;

}